B23Q 3/15553
Tensioning devices or tool holders
Official title: {Tensioning devices or tool holders, e.g. grippers (driving working-spindles and adjusting or stopping them in a predetermined angular position B23Q5/20; securing milling cutters to the driving spindle in a given angular position B23C5/26)}
B23Q3/15553 (Tensioning devices or tool holders) appears on 112 US grants and 74 published applications in this corpus.
Search patents in B23Q- Granted patents
- 112
- Published applications
- 74
- Assignees
- 97
- Inventors
- 229
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 11 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 2 |
| 2005 | 0 | 5 |
| 2006 | 3 | 1 |
| 2007 | 4 | 4 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 2 | 3 |
| 2014 | 0 | 4 |
| 2015 | 2 | 0 |
| 2016 | 1 | 5 |
| 2017 | 3 | 3 |
| 2018 | 3 | 2 |
| 2019 | 0 | 6 |
| 2020 | 1 | 7 |
| 2021 | 4 | 4 |
| 2022 | 5 | 2 |
| 2023 | 3 | 9 |
| 2024 | 1 | 4 |
| 2025 | 1 | 4 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-spindle machine tool14 Apr 2026US 12,599,996 B2Index-Werke GmbH & Co. KG Hahn & Tessky
- Automatic tool exchanger27 Jan 2026US 12,533,761 B2Fuji Corporation
- Robotic tool changer system through magnetic coupling force and all-round mechanical locking18 Nov 2025US 12,472,645 B2Chieftek Precision Co., Ltd.
- Apparatus and method for detecting failure in holding tool of machine tool24 Dec 2024US 12,172,256 B2Honda Motor Co., Ltd.
- Tool conveying device28 Nov 2023US 11,826,866 B2Makino Milling Machine Co., Ltd.
- Adaptive tooling interface (tool changer) with a single motor2 Jul 2026US 2026/0184409 A1Oceaneering International, Inc.
- Tool changing arm of automatic tool changing device20 Nov 2025US 2025/0353127 A1Sanjet International Co., Ltd.
- Automatic Tool Changer System16 Oct 2025US 2025/0319561 A1Cheffy Inc.
- Resilient tool holder clamp for cnc applications10 Jul 2025US 2025/0222547 A1
- Tool-gripping member, tool magazine, machine tool17 Apr 2025US 2025/0121466 A1Brother Kogyo Kabushiki Kaisha
Most cited
By later US patents
- Novel means for mounting a tool to a robot arm105US 5,018,266 AMegamation Incorporated · 1991
- Tool changer for manipulator arm98US 4,604,787 ATransamerica DeLaval Inc. · 1986
- Tool carousel72US 6,228,008 B1Bridgeport Machines Limited · 2001
- Robotic tool change mechanism69US 5,044,063 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1991
- Adapter with modular components for a robot end-of-arm interchangeable tooling system54US 4,676,142 AEOA Systems, Inc. · 1987